``` # Python __pycache__/ *.pyc *.pyo *.pyd # Logs and temp files *.log *.tmp # Environment .env .env.local *.env.* # Dependencies .venv/ venv/ node_modules/ # Build artifacts dist/ build/ target/ # Coverage .coverage coverage/ htmlcov/ # Editors .vscode/ .idea/ # System .DS_Store Thumbs.db # MyPy .mypy_cache/ # Pytest .pytest_cache/ ```